Adjustable hammer for disintegrators and the like



Oct. 2, 1928. 1,686,128

w. M. DUNCAN ADJUSTABLE HAMMER FOR DISINTEGRATORS AND THE LIKE FiledAug. 1, 1927 Arron/V Y Patented Oct. 2, 1928.

NIT'E'DfST-A S WILLIAM M. D I INOAN, OFALTON, 1.1m

p naustmiamnmumnn r03 nrsmrnenhroasenn THE LIKE.

This invention relates to adjustable hammers for disintegrators and thelike. Ham.- mers'of this kind are pivotedtoa rotary carrier, and thedevice herein shown permits 5 them to be adjusted toward .andawayfromthe axis of the rotary carrierhso as to ob tain the desired clearancebetweenthe mas and the surface. which I, supports the material to becrushed or pulverized. This adjustment enables the hammers to most .ef-

fectively perform theirfunction for a long period of time,; after the'free ends, or heads,

of .t-he hammers are wornby contact with the materia-l in the apparatus.y The hammers are subjected to extremely severe shocks and one of myobjects is to produce a strong and durableadjusting de viceadapted toWithstand such shocks with out dangerof breakage or displacement.

A further object. is to producea simple and inexpensive adjusting devicewhichcan be easily and quickly manipulated to vary the positions ofthehammers. .7 With the foregoing and otherlobjects in view, theinventioncomprises the novel construction, combination and arrangement lof parts hereinafter more specifically described and'illustrated in theaccompanying drawings, wherein is shown the preferred embodiment of theinvention. However, it is to be understood that the inventioncomprehends changes, variations and modifications which come wthin thescope of the claims hereunto appended.

Fig. 1 is a fragmentary View showing a series of hammers adjustablysecured to a rotary carrier. v

Fig. -2'is a'view partly in elevation and partly in section on the line22 in Fig. 1. Fig. 3 is a-perspective view of. one of the adjustableblocks.

To illustrate one form of the invention, I have shown a rotary carriercomprising two pairs of disks 1 secured to a rotary shaft 2, so as torotate with the shaft. The disks of each pair may be located betweensmaller-i disks 3 and at opposite sides of a spacing disk 4. Fasteningdevices, such as rivets 6- I have shown substantially U-shaped ham mers,each comprising a head 7 with arms 8'extending from its ends. The objectof the adjustment hereafter described is to maintain the desiredclearance between the heads v 1,686,128- 'FPATENT ).FFIJC E;;5

7 and the grinding lsurface 9 .vvhichfsupports the arms 8. Polygonalblocks l'l are pivotally mounted on the pivotgro'd 10, each block beingsurrounded by and interlocked with one of the armsfS- .The disks Iprevent lat eral displacement of theblocks 11;, and the arms 8.therebyretaining the .blo cks; ini interlocking engagement with thearms. 1 Each arm S ha-s an opening conforming to the outer edge of itspolygonal block 11, and

said block is eccentric to the pivotrod 1O on.

which it ismounted; The blocks are adapted to occupy differentpositionsin the arms 8 so as to locate the hammersin differentpositionswith respect to the. grinding (surface 9. To adjust thehammer-s, the pivot; rods 10 llcan be removed fromthe arms and replacedin any desired position, to obtain the most satisfactory clearancebetween the; hammers and the grinding surface 9.

'arejremoved from theidisks 1,.and the arms 8 are withdrawnfromthedisks.v .The blocks The means -for' detachably securing the pivotrodto the rotary carrier is a tube 12 surrounding the pivot rod andconfined between pairs-of disks 1. The ends of this u tube engage theinner disks 1 to prevent longitudinal displacement of the tube, and 'thepivot rodis detachably secured to the tube by means of a cotter pin 13.The pivot rod is thus securely held whenthe apparatus is in service butsaid rod can be'easily and quickly removed to blocks 11. g I

The service shocks do not tend permit adjustment of the to displaceeither the pivot rods orthe adjustable blocks 11. The blocks arepivotally mounted on the rods 10 so as to turn with the hammers, andalthough these blocks are eccentric to the rods, the shocks do nottendto changethe positions of the blocks relative to the hammers.

I claim:

1. In a disintegrator, a rotary carrier, a

pivot carried .by said carrier, a hammersupport pivotally mounted onsaid pivot, and a hammer carried by said support,said support beingadjustable to vary the position of the hammer relative to the axis ofsaid pivot.

2. In a disintegrator, a rotary carrier, a

pivot carried by said carrier, and a hammer between said arm andpivot tovary the position of the hammer relative to said pivot,

said adjustable member being pivotally suported on said pivot andmovable with the Bummer when the latter is in service.

'4. In a disintegrator, a rotary-carrier, a

adapted to swing about theaxis of saidpivot, said hammercomprisin an armsurrounding said ivot, and an acfiustable member a located etween saidarm andpivot to vary-the position'of the hammer relative to said pivot,

said ad'ustab le member being a polygonal block'plvotally mounted onsaid pivot and detachably interlocked with said arm.

5. In a disintegrator, a rotary carrier, a

V ivot carried by said carrier, a polygonal lock ivotally mounted'onsaid pivot, said block ing eccentric to said pivot, and a hammer carriedby saidblock."

" 6i In adisintegratona rotary ca-rrier,'a ivot carried by said carrier,a polygonal 1 look ivotally mounted on said vpivot, said block ingeccentric to said pivot, and a hammer 'carried'bysaid block, said hammerhaving an opening conforming to said polygonal block, and said blockbeing adj ustable to different positions in said opening.

7. In a, disintegrator, a rotary carrier comprising a pair of disks, avpivot'rod extending through .said disks, a polygonal block confinedbetween said disks and pivotally mountedon'said rod, and a hammercomprising an arm mounted on said block, said arm having an openingconforming to the outer edge of said polygonal block, said block beingeccentric to said pivot rod, and the pivot rod being detachable fromsaid carrier to permit removal of said block from saidopening. 4 8. In adisintegrator, a'rotary carrier comprisingtwo pairs of disks, an aproxi;- mately U-shaped hammer (provided witha pair of arms, each armbeing confined between'th'e disks'of one of said pairs, a pivot rodpassing through both pairs of disks'fand also through said arms, a pairof polygonal blocks pivotallyfmounted on said pivotrod WILLIAM MJDUNG N,

and surrounded by the respective arm s,"s'aid B H blocks being eccentricto said p1vot,each.arm

